ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The wear properties of ADZ (alumina dispersed in Y-TZP) and MDZ (mullite dispersed inY-TZP) were investigated by using a ring-on-block tribometer. The results showed that for Y-TZPceramic, the addition of alumina phase (with 10-20% in mass fraction) leads to an improved wearresistance. With the increase of the normal load, the wear rates of ADZ ceramics increase. Under low andmedium normal load (100N and 300N), the wear resistance is controlled by the hardness of ceramics, andunder high normal load (500N) the fracture toughness is obviously contributed to the wear resistance ofthe ceramics. For MDZ ceramic, the wear resistance of 15MDZ (15wt% mullite dispersed in Y-TZP) isbetter than that of 20 MDZ (20wt% mullite) under the normal load from 100 N to 500 N. The mechanicalproperties of 15MDZ are worse than that of Y-TZP ceramic, but the wear resistance is enhanced due tothe action of “needle roller bearing” of the fractured rod-like mullite particles
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.744.pdf
